Well, it's all good.
Nice UAV, though I think it's a bit outside of what we were talking about.
I think staying on "relevant" topic and using examples that are comparable would reduce the hardness of how we discuss things.
Given the R&D stage we're at, I think it would be more beneficial to give examples in the same category. I am not sure we should start developing something new immediately, but rather finish what we've started.
But I don't think we can rule out that some R&D are going on in the direction of battery and Solar panels on UAV. It's only natural for the development to go in that direction.
pd-170 with 170 hp isn't bad, but what is the altitude ceiling before we need something that will ensure our UAV are operable at higher altitudes ?
And will a hybrid engine use electricity at lower heights or when it reaches above the altitude ceiling, but then again from what i read it won't provide enough power to drive the UAV forward (not enough MJ from what I could understand).